int sys_load_lib(t_canvas *canvas, const char *classname)
{
int dspstate = canvas_suspend_dsp();
struct _loadlib_data data;
data.canvas = canvas;
data.ok = 0;
if (sys_onloadlist(classname))
{
verbose(1, "%s: already loaded", classname);
return (1);
}
/* if classname is absolute, try this first */
if (sys_isabsolutepath(classname))
{
/* this is just copied from sys_open_absolute()
LATER avoid code duplication */
char dirbuf[MAXPDSTRING], *z = strrchr(classname, '/');
int dirlen;
if (!z)
return (0);
dirlen = (int)(z - classname);
if (dirlen > MAXPDSTRING-1)
dirlen = MAXPDSTRING-1;
strncpy(dirbuf, classname, dirlen);
dirbuf[dirlen] = 0;
data.classname=classname+(dirlen+1);
sys_loadlib_iter(dirbuf, &data);
}
data.classname = classname;
if(!data.ok)
canvas_path_iterate(canvas, (t_canvas_path_iterator)sys_loadlib_iter,
&data);
/* if loaders failed so far, we try a last time without a PATH
* let the loaders search wherever they want */
if (!data.ok)
sys_loadlib_iter(0, &data);
if(data.ok)
sys_putonloadlist(classname);
canvas_resume_dsp(dspstate);
return data.ok;
}
static int sys_do_load_lib(t_canvas *canvas, char *objectname)
{
char symname[MAXPDSTRING], filename[MAXPDSTRING], dirbuf[MAXPDSTRING],
*classname, *nameptr, altsymname[MAXPDSTRING];
void *dlobj;
t_xxx makeout = NULL;
int i, hexmunge = 0, fd;
#ifdef _WIN32
HINSTANCE ntdll;
#endif
if (classname = strrchr(objectname, '/'))
classname++;
else classname = objectname;
if (sys_onloadlist(objectname))
{
post("%s: already loaded", objectname);
return (1);
}
for (i = 0, nameptr = classname; i < MAXPDSTRING-7 && *nameptr; nameptr++)
{
char c = *nameptr;
if ((c>='0' && c<='9') || (c>='A' && c<='Z')||
(c>='a' && c<='z' )|| c == '_')
{
symname[i] = c;
i++;
}
/* trailing tilde becomes "_tilde" */
else if (c == '~' && nameptr[1] == 0)
{
strcpy(symname+i, "_tilde");
i += strlen(symname+i);
}
else /* anything you can't put in a C symbol is sprintf'ed in hex */
{
sprintf(symname+i, "0x%02x", c);
i += strlen(symname+i);
hexmunge = 1;
}
}
symname[i] = 0;
if (hexmunge)
{
memmove(symname+6, symname, strlen(symname)+1);
strncpy(symname, "setup_", 6);
}
else strcat(symname, "_setup");
#if 0
fprintf(stderr, "lib: %s\n", classname);
#endif
/* try looking in the path for (objectname).(sys_dllextent) ... */
if ((fd = canvas_open(canvas, objectname, sys_dllextent,
dirbuf, &nameptr, MAXPDSTRING, 1)) >= 0)
goto gotone;
/* same, with the more generic sys_dllextent2 */
if ((fd = canvas_open(canvas, objectname, sys_dllextent2,
dirbuf, &nameptr, MAXPDSTRING, 1)) >= 0)
goto gotone;
/* next try (objectname)/(classname).(sys_dllextent) ... */
strncpy(filename, objectname, MAXPDSTRING);
filename[MAXPDSTRING-2] = 0;
strcat(filename, "/");
strncat(filename, classname, MAXPDSTRING-strlen(filename));
filename[MAXPDSTRING-1] = 0;
if ((fd = canvas_open(canvas, filename, sys_dllextent,
dirbuf, &nameptr, MAXPDSTRING, 1)) >= 0)
goto gotone;
if ((fd = canvas_open(canvas, filename, sys_dllextent2,
dirbuf, &nameptr, MAXPDSTRING, 1)) >= 0)
goto gotone;
return (0);
gotone:
close(fd);
class_set_extern_dir(gensym(dirbuf));
/* rebuild the absolute pathname */
strncpy(filename, dirbuf, MAXPDSTRING);
filename[MAXPDSTRING-2] = 0;
strcat(filename, "/");
strncat(filename, nameptr, MAXPDSTRING-strlen(filename));
filename[MAXPDSTRING-1] = 0;
#ifdef HAVE_LIBDL
dlobj = dlopen(filename, RTLD_NOW | RTLD_GLOBAL);
if (!dlobj)
{
post("%s: %s", filename, dlerror());
class_set_extern_dir(&s_);
return (0);
}
makeout = (t_xxx)dlsym(dlobj, symname);
/* fprintf(stderr, "symbol %s\n", symname); */
#endif
#ifdef _WIN32
sys_bashfilename(filename, filename);
ntdll = LoadLibrary(filename);
if (!ntdll)
{
post("%s: couldn't load", filename);
class_set_extern_dir(&s_);
return (0);
}
makeout = (t_xxx)GetProcAddress(ntdll, symname);
#endif
if (!makeout)
{
post("load_object: Symbol \"%s\" not found", symname);
class_set_extern_dir(&s_);
return 0;
}
(*makeout)();
class_set_extern_dir(&s_);
sys_putonloadlist(objectname);
return (1);
}
static int sys_do_load_lib(t_canvas *canvas, char *objectname)
{
char symname[MAXPDSTRING], filename[MAXPDSTRING], dirbuf[MAXPDSTRING],
*classname, *nameptr, altsymname[MAXPDSTRING];
void *dlobj;
t_xxx makeout = NULL;
int i, hexmunge = 0, fd;
#ifdef _WIN32
HINSTANCE ntdll;
#endif
if (classname = strrchr(objectname, '/'))
classname++;
else classname = objectname;
if (sys_onloadlist(objectname))
{
post("%s: already loaded", objectname);
return (1);
}
for (i = 0, nameptr = classname; i < MAXPDSTRING-7 && *nameptr; nameptr++)
{
char c = *nameptr;
if ((c>='0' && c<='9') || (c>='A' && c<='Z')||
(c>='a' && c<='z' )|| c == '_')
{
symname[i] = c;
i++;
}
/* trailing tilde becomes "_tilde" */
else if (c == '~' && nameptr[1] == 0)
{
strcpy(symname+i, "_tilde");
i += strlen(symname+i);
}
else /* anything you can't put in a C symbol is sprintf'ed in hex */
{
sprintf(symname+i, "0x%02x", c);
i += strlen(symname+i);
hexmunge = 1;
}
}
symname[i] = 0;
if (hexmunge)
{
memmove(symname+6, symname, strlen(symname)+1);
strncpy(symname, "setup_", 6);
}
else strcat(symname, "_setup");
#if 0
fprintf(stderr, "lib: %s\n", classname);
#endif
/* try looking in the path for (objectname).(sys_dllextent) ... */
if ((fd = canvas_open(canvas, objectname, sys_dllextent,
dirbuf, &nameptr, MAXPDSTRING, 1)) >= 0)
goto gotone;
/* same, with the more generic sys_dllextent2 */
if ((fd = canvas_open(canvas, objectname, sys_dllextent2,
dirbuf, &nameptr, MAXPDSTRING, 1)) >= 0)
goto gotone;
/* next try (objectname)/(classname).(sys_dllextent) ... */
strncpy(filename, objectname, MAXPDSTRING);
filename[MAXPDSTRING-2] = 0;
strcat(filename, "/");
strncat(filename, classname, MAXPDSTRING-strlen(filename));
filename[MAXPDSTRING-1] = 0;
if ((fd = canvas_open(canvas, filename, sys_dllextent,
dirbuf, &nameptr, MAXPDSTRING, 1)) >= 0)
goto gotone;
if ((fd = canvas_open(canvas, filename, sys_dllextent2,
dirbuf, &nameptr, MAXPDSTRING, 1)) >= 0)
goto gotone;
return (0);
gotone:
close(fd);
class_set_extern_dir(gensym(dirbuf));
/* rebuild the absolute pathname */
strncpy(filename, dirbuf, MAXPDSTRING);
filename[MAXPDSTRING-2] = 0;
strcat(filename, "/");
strncat(filename, nameptr, MAXPDSTRING-strlen(filename));
filename[MAXPDSTRING-1] = 0;
#ifdef _WIN32
{
char dirname[MAXPDSTRING], *s, *basename;
sys_bashfilename(filename, filename);
/* set the dirname as DllDirectory, meaning in the path for
loading other DLLs so that dependent libraries can be included
in the same folder as the external. SetDllDirectory() needs a
minimum supported version of Windows XP SP1 for
SetDllDirectory, so WINVER must be 0x0502 */
strncpy(dirname, filename, MAXPDSTRING);
s = strrchr(dirname, '\\');
basename = s;
if (s && *s)
*s = '\0';
if (!SetDllDirectory(dirname))
error("Could not set '%s' as DllDirectory(), '%s' might not load.",
dirname, basename);
/* now load the DLL for the external */
ntdll = LoadLibrary(filename);
if (!ntdll)
{
post("%s: couldn't load", filename);
class_set_extern_dir(&s_);
return (0);
}
makeout = (t_xxx)GetProcAddress(ntdll, symname);
if (!makeout)
makeout = (t_xxx)GetProcAddress(ntdll, "setup");
SetDllDirectory(NULL); /* reset DLL dir to nothing */
}
#elif defined HAVE_LIBDL
dlobj = dlopen(filename, RTLD_NOW | RTLD_GLOBAL);
if (!dlobj)
{
post("%s: %s", filename, dlerror());
class_set_extern_dir(&s_);
return (0);
}
makeout = (t_xxx)dlsym(dlobj, symname);
if(!makeout)
makeout = (t_xxx)dlsym(dlobj, "setup");
#else
#warning "No dynamic loading mechanism specified, libdl or WIN32 required for loading externals!"
#endif
if (!makeout)
{
post("load_object: Symbol \"%s\" not found", symname);
class_set_extern_dir(&s_);
return 0;
}
(*makeout)();
class_set_extern_dir(&s_);
sys_putonloadlist(objectname);
return (1);
}
